منابع مشابه
A Compressor Surge Control System: Combination Active Surge Control System and Surge Avoidance System
A novel method for combining active surge control system (ASCS) and surge avoidance system (SAS) for a centrifugal compressor is presented. ASCS is a promising method to improve compressor operating area by stabilizing surge. However, this method is not applied yet in industrial compressors. Safety issue is considered in implementing the ASCS. A failure in ASCS may endanger the compressor by en...
متن کاملGlacier surge mechanism: 1982-1983 surge of variegated glacier, alaska.
The hundredfold speedup in glacier motion in a surge of the kind the kind that took place in Variegated Glacier in 1982-1983 is caused by the buildup of high water pressure in the basal passageway system, which is made possible by a fundamental and pervasive change in the geometry and water-transport characteristics of this system. The behavior of the glacier in surge has many remarkable featur...
متن کاملSurge Suppressors and Clamps
A tutorial paper with a review of the technologies available in the mid-eighties for surge protection of lowvoltage end-user equipment. The principles of operation are described for “crowbar devices” (now generally described under the standardized name of “voltage switching devices”) and for “voltage clamping devices: (now generally described under the standardized name of “voltage limiting dev...
متن کاملIntermediated Surge Pricing
I study a market in which a profit-maximizing intermediary facilitates trade between buyers and sellers. The intermediary sets prices for buyers and sellers, and keeps the difference as her fee. Optimal prices increase when demand increases, i.e., shifts right. If a demand increase is due to an increase in the number of ex ante similar buyers, then the intermediary’s optimal percent fee decreas...
متن کاملIndiana Land Values Surge!
S tatewide, values of average Indiana cropland increased by 14.2% in the year ending in June 1996, nearly double the 7.4% increase a year ago. According to the Purdue land values survey, this is the ninth consecutive year of increasing Indiana land values. Increases of around 35% were registered in both the first and last third of this 9 year period. There was a lull in the upward trend during ...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 2007
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.6261